Bolster



Jan. 20, 1931. JQHNSON ET AL 1,789,409

'BOLSTER Filed April 13. 1928 s Sheets-Sheet 1 1931- G. T. JOHNSON ET AL 1, ,40

BOLSTER Fild April 13. 1928 3 Sheets-Sheet 2 Jan. 20, 1931.

G. T. JOHNSON ET AL 1,789,409

BOLSTER Filed April 15. 1928 3"Sheot s-Sheet 5 at the inner side of the wheels, as shown at 18 in Fig. 2, in which event the widened portion of the bolster bottom is correspondingly shifted. Inasmuch as the side bearing is then located between two struts instead of at the junction thereof, a post19 is provided overthe side bearing and bisecting the triangle to effect the needed bracing. It'will be understood, of course, that the bolstermay f. have provision for. bothglocations of the side.

havinga marginal flange and the struts having fianges'merging into the marginal flange,

bearings so that either orboth may beused I as needed.

In the formshown in Fig. 3', the trus e1 I I I ments are so proportioned that the innerm'o'st' i struts 20 rising inwardly from the side 'bear- ,ings meet the top of the bolster vertical of the respective sides of the center sill. :The central struts 21 are provided each havingits lower end on the bottom fiange of the bolster in the vertical plane of one side of the center sill and its-upper end joined to the top flange of the bolster in the. vertical plane of the opposite sideof the sill, the two struts intersecting in, the central vertical plane of the sill, as at 22; V e V In Figure 4, the struts 24 arecarried .from

' point's'spaced from the sides of the sillupi wardly and inwardly to meet the top flange ofjthe'bolster at a point 25 over the center of i the sill. From this meeting point, a-vertical .strut 26 extends downwardly "approximately half the height of the bolster" where it branches into divergent struts 27. which meet s the bottom bolster flange over the sides of the centerfsill. In theforms shownin both Fig,

3an d Fig. 4:,opei1ings 28areformedthrough thebolster web between the central divergent strut members and openings 29 are formed v e at the outer sides of said members.

In theform shown in Figs. 5 and 6, the strut members 30 "correspond to the members '24 r in Fig. 4 and there is a'verticaI strut 31 001?- responding to the member 26. The lowei; end

. of the strut 31' divides and formsthe" trans verse diverging branches 32 as well as the longitudinal diverging branches 33 and aweb 34 connects the diverging members. I

The form shown in Figs; 7 and 8fdiffers from that shown in Figs. 5*and 6 in having 6 the lower-end of the vertical strut member 35 passed into a conical or bell-like web 36 of elhpticalform at'its base and the bottom of the bolster is widened as at37, to correspond ion to said elliptical base. Anelliptica-l opening I I 38 is formed through thebottom of the bolster, and within the bell the strut 35 termi- 7 Having fully'described our in nates in a cruciform foot'39,

fention what we claim as new and ters-Patent,,is:

7' In a car construction, aninside bolster'of f I skeleton rectangular form, and having diagonal struts joining the top and bottom of the bolster. sald struts extending inseries from one end of thebolster' to theothenfthe bolster desire to sec-ure b Let 

